PHP 将 xml 解析为数组

Question

我需要将 xml 转换为数组。我从网上 api 得到了 xml。到目前为止我的代码：

function download_page($path){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$path);
curl_setopt($ch, CURLOPT_FAILONERROR,1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
$retValue = curl_exec($ch);          
curl_close($ch);
return $retValue;
}
$sXML = download_page('https://url/api/user/distgroup/domain/user?t=ticketofuser');
echo "xml start: ". htmlentities($sXML);
$oXML = new SimpleXMLElement($sXML);

echo "xml: ". $oXML;
foreach($oXML["distributionGroups"] as $key=>$value)
{
  $groups[$key]["group"]["id"]=$value["id"];
    $groups[$key]["group"]["domain"]=$value["domain"];
    $groups[$key]["group"]["name"]=$value["name"];
    $groups[$key]["group"]["type"]=$value["type"];
    $groups[$key]["group"]["loggedIn"]=$value["loggedIn"];
    $groups[$key]["group"]["nightMode"]=$value["nightMode"];

    $groups[$key]["group"]["loggedInAgents"]=$value["loggedInAgents"];
    $groups[$key]["group"]["freeAgents"]=$value["freeAgents"];
    $groups[$key]["group"]["callsWaiting"]=$value["callsWaiting"];
}
$temp=array();
    foreach ($groups as $key => $row) {
         $temp[$key]  = $row["id"]; 
}
    array_multisort($temp, SORT_ASC, $groups);
    $_SESSION["groups"]=$groups;

    echo "groups: ". $groups;

下载 xml 后，当我用 htmlentities($sXML) 回显它时它看起来像这样；

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<distributionGroups>
<group>
<id>33247</id>
<domain>soluno.se</domain>
<name>Kamoda Support</name>
<type>ATTENDANT</type>
<loggedIn>true</loggedIn>
<nightMode>false</nightMode>
<loggedInAgents>1</loggedInAgents>
<freeAgents>1</freeAgents>
<callsWaiting>0</callsWaiting>
</group>
<group>
<id>33257</id>
<domain>soluno.se</domain>
<name>Test 5</name>
<type>ATTENDANT</type>
<loggedIn>false</loggedIn>
<nightMode>false</nightMode>
<loggedInAgents>0</loggedInAgents>
<freeAgents>0</freeAgents>
<callsWaiting>0</callsWaiting>
</group>
</distributionGroups>

我的问题是在我尝试用 foreach 填充数组后我的数组是空的。我做错了什么？

Answer 1

在您的第二个 foreach 中，您缺少密钥 group。此外，您可以使用 $oXML->group 迭代 XML 元素：

$oXML = new SimpleXMLElement($sXML);
$groups = [] ;
foreach($oXML->group as $group)
{
    $groups[]["group"] = [
        'id' => (string)$group->id,
        'domain' => (string) $group->domain,
        'name' => (string) $group->name,
        'type' => (string) $group->type,
        'loggedIn' => (string) $group->loggedIn,
        'nightMode' => (string) $group->nightMode,
        'loggedInAgents' => (string) $group->loggedInAgents,
        'freeAgents' => (string) $group->freeAgents,
        'callsWaiting' => (string) $group->callsWaiting,
    ];
}
$temp=array();
foreach ($groups as $key => $row) {
    $temp[$key]  = $row['group']["id"]; // missing 'group' in $row['group']
}
array_multisort($temp, SORT_ASC, $groups);

print_r($temp);
print_r($groups);

$temp 的输出：

Array
(
    [0] => 33247
    [1] => 33257
)

$groups 的输出：

Array
(
    [0] => Array
        (
            [group] => Array
                (
                    [id] => 33247
                    [domain] => soluno.se
                    [name] => Kamoda Support
                    [type] => ATTENDANT
                    [loggedIn] => true
                    [nightMode] => false
                    [loggedInAgents] => 1
                    [freeAgents] => 1
                    [callsWaiting] => 0
                )

        )

    [1] => Array
        (
            [group] => Array
                (
                    [id] => 33257
                    [domain] => soluno.se
                    [name] => Test 5
                    [type] => ATTENDANT
                    [loggedIn] => false
                    [nightMode] => false
                    [loggedInAgents] => 0
                    [freeAgents] => 0
                    [callsWaiting] => 0
                )

        )

)

或者您可以删除第一个数组中的 "group" :

$oXML = new SimpleXMLElement($sXML);
$groups = [] ;
foreach($oXML->group as $group)
{
    $groups[] = [
        'id' => (string)$group->id,
        'domain' => (string) $group->domain,
        'name' => (string) $group->name,
        'type' => (string) $group->type,
        'loggedIn' => (string) $group->loggedIn,
        'nightMode' => (string) $group->nightMode,
        'loggedInAgents' => (string) $group->loggedInAgents,
        'freeAgents' => (string) $group->freeAgents,
        'callsWaiting' => (string) $group->callsWaiting,
    ];
}
$temp=array();
foreach ($groups as $key => $row) {
    $temp[$key]  = $row["id"];
}
array_multisort($temp, SORT_ASC, $groups);

Answer 2

new SimpleXMLElement($sXML) 创建一个 XML 元素的对象（不是数组）。因此，在您的情况下，此 $oXML = new SimpleXMLElement($sXML); 为您提供了 distributionGroups 元素。从那里您可以访问它的子元素，例如 foreach($oXML->group as $group)，但请记住 $group 也是 SimpleXMLElement() 的一个实例。要访问元素的内容，您实际上需要转换对象，即 (int) $group->loggedInAgents，以获得整数值。否则 $group-> loggedInAgents 实际上会给你另一个 SimpleXMLElement() 对象，而不是一个变量。

在 docs

中阅读更多内容

Answer 3

您可以让代码在组内的每个元素之间复制，并使用元素名称将元素添加到数组，从而使其更加灵活。这意味着随着 XML 发生变化（或者如果发生变化），代码仍将保留所有传递过来的数据。

我还合并了两个循环，因此 $temp 与主数据设置在同一个循环中。

$oXML = new SimpleXMLElement($sXML);
$groups = array();
$temp=array();
foreach ( $oXML->group as $group )  {
    $data = array();
    foreach ( $group as $element )  {
        $data[ $element->getName() ] = (string)$element;
    }
    $groups[]["group"] = $data;
    $temp[] = $data["id"];
}
print_r($temp);
print_r($groups);

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